Gas cock and jet plug therefor



E. L. GLAUS.

GAS COCK AND JET PLUG THEREFOR.

APPLICATION FILED OCT. 16, I920- v Patented July 4, 1922.

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lNVf/VTU/f BMIL. L. BLALIE:

ATTURA/EY ulllll m tl" EMIL L. CLAUS, OF MILWAUKEE, WISCONSIN.

GAS COCK AND JET PLUG THEREFOR.

incense.

Specification of Letters latent.

Patented July 4, 1922.

Application filed October 16, 1920. Serial No. 417,361.

T0 all whom it may concern:

Be it known that I, Earn. L. CLAUS, a citizen of the United States, andresident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain; new and useful Improvements in GasCocks and Jet Plugs Therefor; and I do hereby decocks and in the methodof making the same ;1 and in the means of assembling such 1111-;

proved jet plugs in the gas cocks thereof.

In late years gas companies have steadily lowered the standard of thegas which'theyhave supplied and at the same time considerably reducedthe pressure of supply with the consequent result that in burningsuchgasthe heat produced is considerably less than heretofore and the flameis relatively small and weak. In order to take full advantage of all theheat units of present day gas and to overcome the objectionable lowpressures and the fluctuation in pressures, my invention disclosed inUnited States Letters Patent No. 1320843, issued November a, 1919; wasmade- By the use of the structure shown therein present day gasis madeto accomplish the results whichca'n be obtained from gas of greatlysuperior quality and higher pressure without the influence of theinvention.

The primary'purpose of the invention illustrated in theaccompanying-drawing is to procure all of the advantages which arepossible through the use of the structure shown and described in saidpatent by means of a simpler, cheaper and stronger means; In other wordsit is the fundamental prin ciple of this present invention to produce aj'etpli'ig from a single piece of material shaped to form a solid wallshell of such thinness that it will. have sui'licient flexure to permitof tight frictional engagement in the part of the gas cook with which itis used. I

v It isalso an object of this invention to providea jet plug which,while' having a solid shell wall, may be drawn from a single blank diskof light stampingn'iaterial.

. It is also an object of this invention to provide an article of thisnature which may be used with or without a jet orifice, and

which when used without may be employed 1n connection with suitablevalve structure for regulating and cutting off gas flow.

A. still further object of the invention is to provide a gas cook ofimproved design with which said jet plugs may be used, the latter beingaccurately and easily assoc ated therewith and 50 arranged that it isimpossible for the same to be mutilated by unskillful assembling of thevalve structure.

lVith these and other objects in view which will become apparent as thedescription proceeds, my invention consists in the novel features ofconstruction, combination and arrangement of parts which will behereinafter more particularly described and claimed.

In the accompanying drawings Figure 1 represents a vertical sectionalview through 'a gas cock embodying the essential features of myinvention and showing one of my improved jet plugs assembled therein;

Figure 2 is a detail transverse sectional view on an enlarged scale, theplane-of said section being on the line 2-2 of Figure 1;

Figure 8 is a perspective view of one of my improved jet plugs;

Figure 4: is a plan view of a blank disk from which the'j'et plug shownin Figure 3- has been drawn by a suitable stamping operation, and

Figure 5 is an enlarged longitudinal sectional view through movable coacting parts of a gas valve structure having a modified form of my jetplug associated therewith, one portion of the latter being adapted tocooperate with a part of the former to regu late and cut of? gas supply.

Referring more particularly to the draw ings, it will be seen that a gascock constru'cted in accordance with the principles otth-in'ventionincludes a casing 1 having an inlet- 2' and an outlet 3, and being provided with a taperedbore intersecting the plane of the inlet and outlet.Disposed for rotation in this bore of the casing 1 is a tapered valveplug 4: having a suitable handle 5 on one end and held in position by aspring-urged washer 6 on the other end. The out-let 3 of the casingissurrounded by a discharge nozzle? having a bore 8 of a diameter which ispreferably larger than the diameter of the, said outlet and which is;very slightly tapered tor a short distance inwardly from its outer endas indicated at 7'.. The exterior of said nozzle is screw-threaded toreceive the screw threads of a closure nipple 9. The improved jet plug10 which is used with this gas cock structure'is shown most ficebecauseof the extreme thinness of the shell forming the jet plug has nocylindrical wall to offer any restriction or to set up any frictionwhich will interfere-with the flow of gas therethrough; In other wordsthe gas which enters the open end of the body portion 11of the jetplug-1O is directed to this jet orifice by the tapered walls of theconical end portion 12 so that the natural flow of the gas is greatlyincreased in velocity.

The body'portion 11 of the jet plug is also fluted or is provided withlongitudinally eX- tending alternately disposed ribs and grooves, theribs and grooves being diametrically opposed as shown in Figure 2. Alsofrom this view it will be seen that the opposed pairs of ribs arelocated at'right angles 1 to each other, as are also the pairs ofgrooves.

As a, result of such construction, if the jet plug is inserted 111a boreof uniform diameter, gas may flow both through the plug and around thesame, or between the ribs.

. As hereinbefore mentioned the jet plug 10 is formed of a one-pieceshell, the walls of which are solid, this being in contradistinction tothe longitudinally splitbody wall of the type of plug illustrated in thehereinbefore referred to patent. Many different ways may be employed formaking the new type of plug shown in the present drawing, since the kindof material and method of formation is relatively unimportant so long asthe solid wall shell'is of requisite thinness to permit slight'flexure'sand has a conical end and a fluted or ribbed body portion. For instancesuch a plug as this may be made from metal bar stock drilled hollow andfluted, or

' from lava and similar mineral material prepared in the same manner.

On the other hand I have found that a most eflicient article can beproduced very cheaply and quickly through a simple stampmg or drawingoperation. That is to say I provide a' flat circularblank B ofappropriate diameter such as is shown in Fig. 4 and, after subjecting the sameto the necessary stamping or drawing operations, form'the jet plug shownin Figure 3. The male and female dies by which the operations arecarried out may be'varied as to'size and shape to operate on blanks ofdifferent diameters and to produce jet plugs of varying sizes and withdifferent numbers of alternate ribs'and grooves, After the stampingordrawing is complete the jet orifice maybe made in the same is affected.

tip of the conical end portion 12, or said end portion may be left solidto produce an articlesuch as is illustrated in Figure 5.

lVhen a jet plug 10 is assembled with a gas cook structure such as isillustrated in Figure l, which is practically the final as semblingoperation, the former has" the larger end of its elongated body insertedin the slightly tapered outer end of the dis-' charge nozzle 7 andforced therein as far as possible by hand. After this the closure nipple9 is threaded on the nozzle until the conical discharge opening 9 hasthe tip of the conical end 12 of the jet plug engaged therewith andcentered therein. lVith the parts arranged in this position,tl1e jetplug will be forced into the bore of the nozzle 7 as the nipple isthreaded on the latter and at the same time will be correctly centeredor in other words the outer surface of the conical end of theplug 10will beconcentric with the similar surface of the discharge opening 9 ofthe nipple 9. Consequently when the nipple is unscrewed a predeterminedextent after having forced the jet plug into the nozzle, the flow of gasthrough the discharge opening 9 and around the conical end of the jetplug will be uniform. This "combination of parts provides a very simplemanner of correctly assembling the jet plugs in the gas cock structuresand enables the'latter'to be completely assembled before said plugs areadded thereto, thereby decreasing the liabil- V ity of derangement ofparts through rough handling or the like.

The bore-8 of the discharge nozzle 7 is relatively longso that eventhough the nipbore 8. If such is permitted tosocc'urthe I V conical endportion 12 isliable to be mutilated with the result that the flow of gasboth through the jet plug and around the To further prevent thepossibility of the jet plug being thus brought into contact with theend'of its bore 8, the base portion of the discharge nozzle 7 isprovided with a stop shoulder13 against, which the inner end of thenipple 9 is adapted to abut. Engagement between these two parts willoccur beforeengagement between the inner end of the jet plug and theinner end of the bore 8. i r

When a jet plug 10 is properly assembled in its gas cock as shown inFigure 1, there will be a flow of gas'through the jetorifice ofsaidjetplug, assuming the valve plug 4- to have its passage aligned withthe inlet 2 and outlet 3, and the tapered and,non cylindrical inner wall'of the conical end portion 12 will cause the gas to be eXpelled throughthe opening 9' in the nipple 9 at its greatest possible velocity Thiswill have the effect of drawing other gas at the normal pressure ofsupply around the outside of the jet plug 10, between the ribs thereof,and between the outer surface of the conical end portion 12 and theadjacent surface of the inner nipple wall. In other words the flow ofgas through the jet orifice of the jet plug will operate on the injectorprinciple and supply a uniform volume of gas at a constant velocity tothe air mixer A or other appliance with which the gas cock isassociated. WVhile it is possible to vary the size of the jet orifice,it is preferable to permit the same to remain at one size irrespectiveof the pressure of the gas supply because the quantity of gas furnishedan appliance with which my invention is used is automatically regulatedin view of this principle of operation. In other words even though thequantity of gas which passes through the jet orifice is constantirrespective of pressure the quantity of gas drawn into the air mixerwill be uniform on account of the compensating nature of the flow of gasaround the outside of the jet plug.

My invention will be found to be of considerable advantage when used inconnection with so-called simmering burners wherein it is essential thata relatively small quantity of gas at a uniform pressure be furnished.\Vhen so used the closure nipple 9 of the structure depicted in Figure 1would be threaded onto the discharge nozzle 7 a sufficient extent toprevent any gas escaping around the jet plug 10, all gas being directedthrough the discharge orifice.

Another use of a jet plug constructed in accordance with my invention isshown in Figure 5. In this case a jet plug 15 is seated in the end of adischarge member 16 carried by any suitable gas appliance structure. Aregulating nipple or the like 17 is threaded on the end of thisdischarge member 16 and has an outlet 18, the wall of which is tapered.Any suitable means may be employed for nick and easy manipulation of thenipple 1 7 to move it toward and away from the imperforate conical endportion 15 of the jet plug. In this arrangement of parts it is necessarythat the gas flow around the jet plug 15 if it is to escape from theoutlet 18, and therefore the body of the plug is ribbed in a mannersimilar to the jet plug shown in the other figures of the drawing.Obviously by moving the nipple 17 so that the wall of the outlet 18 isdisposed diiferent distances away from the outer surface of the conicalend 15 of the jet plug, the gas flow is varied, or entirely out off ifthe parts are arranged as shown in the dotted lines in Figure 5. Thus myimproved jet plug may be employed as one element of a valve structure.

I claim:

1. A gas cook comprising a casing provided with an inlet and an outlet,a valve plug fitted in the casing, a discharge nozzle surrounding theoutlet and having a jet plug receiving bore, the outer end of said borebeing slightly larger than the inner end portion and taperedthere-toward, a closure nipple associated with the discharge nozzle andmovable inwardly and outwardly thereof, said nipple having a conicalshaped discharge opening, and a jet plug disposed in said bore of thenozzle and having a conical end portion extended therefrom, said jetplug being forced into the bore of the nozzle after being seated in saidtapered outer end by moving the discharge opening of the nipple intoengagement with the conical end of the jet plug substantially asdescribed, and then moving the nipple outwardly of the nozzle to providea uniform annular passageway between the wall of said discharge openingof the nipple and the outer surface of the conical end of the jet plug.

2. A gas cock, comprising a casing provided with an inlet and an outlet,valve means intermediate the inlet and outlet, a discharge nozzlesurrounding the outlet and having a jet plug receiving bore, the outerend of said bore being slightly larger than the inner end portion andtapered theretoward, and a jet plug disposed in said bore, said jet plugincluding a relatively thin hollow shell, the main portion havinglongitudinal ribs forming channels whereby fluid may pass around theplug and the outermost diameter of said plug as defined by said ribsgiving to have snug frictional engagement with the walls of said bore.

In testimony that I claim the foregoing I have hereunto set my hand atMilwaukee in the county of Milwaukee and State of Wisconsin.

EMIL L. CLAUS.

